Thermally driven combined cycle vapor compression heat pump

Abstract

This invention provides a heat-driven combined cycle vapor compression heat pump, belonging to the field of refrigeration and heat pump technology. The compressor has a refrigerant vapor channel that connects to the heater via a high-temperature heat exchanger and an expander. The vapor channel then splits into two paths: the first path connects to the second expander, and the second path connects to the regenerator. The regenerator then has a condensate pipe connected to the steam distribution chamber via a nozzle. The steam distribution chamber also has a refrigerant vapor channel connecting to the intermediate steam inlet of the second expander. The second expander also has a refrigerant vapor channel connecting to the regenerator. The steam distribution chamber also has a condensate pipe connected to the evaporator via a throttling valve. The evaporator also has a refrigerant vapor channel connecting to the regenerator, and the regenerator also has a refrigerant vapor channel connecting to the compressor. The high-temperature heat exchanger has a high-temperature heat medium channel, the heater has a heated medium channel, and the evaporator has a low-temperature heat medium channel, all connected to the outside. The expander and the second expander are connected to the compressor and transmit power, forming a heat-driven combined cycle vapor compression heat pump.

Description

Technical fields:

[0001] This invention belongs to the field of refrigeration and heat pump technology. Background technology:

[0002] People's lives and production require both cooling and heating. Using heat pump technology to provide cooling / heating is a fundamental means to achieve efficient and high-value energy utilization. In practical applications, the operating parameters, performance index, manufacturing cost, adaptability, and utilization level of heat resources of heat pumps need to be comprehensively considered.

[0003] For phase change compression heat pumps, the advantage lies in their ability to achieve constant temperature heat absorption. However, when high-parameter heating is required, it is challenging to find simple technical measures to reduce the negative effects of the throttling process and ensure that components such as the evaporator have suitable operating parameters and are feasible and convenient in design.

[0004] Based on the principle of simple and efficient use of thermal energy for refrigeration / heating, this invention proposes a thermally driven combined cycle vapor compression heat pump with a reasonable process, simple structure, flexible adjustment of condensate depressurization process and effective energy recovery, suitable operating parameters and design feasibility for components such as evaporators, low systemic irreversible loss, and reasonable performance index. Summary of the Invention:

[0005] The main objective of this invention is to provide a heat-driven combined cycle vapor compression heat pump, the specific contents of which are described below:

[0006] 1. A heat-driven combined cycle vapor compression heat pump mainly consists of a compressor, expander, secondary expander, nozzle, steam distribution chamber, throttling valve, high-temperature heat exchanger, heater, evaporator, and regenerator. The compressor has a refrigerant vapor passage connected to the high-temperature heat exchanger, which in turn has a refrigerant vapor passage connected to the expander. The expander also has a refrigerant vapor passage connected to the heater, after which it splits into two paths—the first path connects to the secondary expander, and the second path connects to the regenerator. The regenerator then has a condensate line connected to the steam distribution chamber via the nozzle. The steam distribution chamber also has a refrigerant vapor passage... The expansion chamber is connected to the intermediate steam inlet of the second expander. The second expander also has a refrigerant vapor passage connected to the regenerator. The steam distribution chamber also has a condensate pipeline connected to the evaporator via a throttling valve. The evaporator also has a refrigerant vapor passage connected to the regenerator. The regenerator also has a refrigerant vapor passage connected to the compressor. The high-temperature heat exchanger also has a high-temperature heat medium passage connected to the outside. The heater also has a heated medium passage connected to the outside. The evaporator also has a low-temperature heat medium passage connected to the outside. The expander and the second expander are connected to the compressor and transmit power, forming a heat-driven combined cycle vapor compression heat pump.

[0007] 2. A heat-driven combined cycle vapor compression heat pump mainly consists of a compressor, expander, secondary expander, nozzle, steam distribution chamber, throttling valve, high-temperature heat exchanger, heater, evaporator, regenerator, and intermediate-temperature regenerator. The compressor has a refrigerant vapor passage connected to the high-temperature heat exchanger, which in turn has a refrigerant vapor passage connected to the expander. The expander also has a refrigerant vapor passage that connects to the heater and intermediate-temperature regenerator, then splits into two paths—the first path connects to the secondary expander, and the second path connects to the regenerator. The regenerator then has a condensate line that connects to the steam distribution chamber via the nozzle. The steam distribution chamber also contains refrigerant vapor... The steam passage connects to the intermediate steam inlet of the second expander. The second expander also has a refrigerant steam passage connected to the regenerator. The steam distribution chamber also has a condensate pipeline connected to the evaporator via a throttling valve. The evaporator also has a refrigerant steam passage connected to the regenerator. The regenerator also has a refrigerant steam passage connected to the compressor via a medium-temperature regenerator. The high-temperature heat exchanger also has a high-temperature heat medium passage connected to the outside. The heater also has a heated medium passage connected to the outside. The evaporator also has a low-temperature heat medium passage connected to the outside. The expander and the second expander are connected to the compressor and transmit power, forming a heat-driven combined cycle vapor compression heat pump.

[0008] 3. A heat-driven combined cycle vapor compression heat pump mainly consists of a compressor, expander, secondary expander, nozzle, steam distribution chamber, throttling valve, high-temperature heat exchanger, heater, evaporator, regenerator, and intermediate-temperature regenerator. The compressor has a refrigerant vapor passage connected to the high-temperature heat exchanger. The high-temperature heat exchanger also has a refrigerant vapor passage connected to the expander. The expander also has a refrigerant vapor passage that connects to the heater and intermediate-temperature regenerator, then splits into two paths—the first path connects to the secondary expander, and the second path connects to the regenerator. The regenerator then has a condensate line connected to the steam distribution chamber via the nozzle. The steam distribution chamber also has a refrigerant vapor passage connected to the secondary expander. The expansion unit has an intermediate steam inlet. The second expansion unit also has a refrigerant vapor passage connected to the regenerator. The steam distribution chamber also has a condensate pipeline connected to the evaporator via a throttling valve. The evaporator also has a refrigerant vapor passage connected to the regenerator. The regenerator also has a refrigerant vapor passage connected to the compressor. After that, the compressor has a refrigerant vapor passage connected to itself via a medium-temperature regenerator. The high-temperature heat exchanger also has a high-temperature heat medium passage connected to the outside. The heater also has a heated medium passage connected to the outside. The evaporator also has a low-temperature heat medium passage connected to the outside. The expansion unit and the second expansion unit are connected to the compressor and transmit power, forming a heat-driven combined cycle vapor compression heat pump.

[0009] 4. A heat-driven combined cycle vapor compression heat pump, which is the heat-driven combined cycle vapor compression heat pump described in item 1, with the addition of a reheater. The refrigerant vapor passage of the second expander is adjusted to be connected to the reheater, and then the refrigerant vapor passage of the second expander is connected to the reheater. The refrigerant vapor passage of the heater is adjusted to be connected to the reheater, and then the refrigerant vapor passage of the heater is connected to the reheater, thus forming a heat-driven combined cycle vapor compression heat pump.

[0010] 5. A heat-driven combined cycle vapor compression heat pump, which is a heat-driven combined cycle vapor compression heat pump described in item 2 or 3, with the addition of a reheater. The refrigerant vapor passage of the second expander is adjusted to be connected to the reheater, and then the refrigerant vapor passage of the second expander is connected to the reheater. The refrigerant vapor passage of the intermediate temperature reheater is adjusted to be connected to the reheater, and then the refrigerant vapor passage of the intermediate temperature reheater is connected to the reheater, thus forming a heat-driven combined cycle vapor compression heat pump.

[0011] 6. A heat-driven combined cycle vapor compression heat pump, wherein a second heater is added to the heat-driven combined cycle vapor compression heat pump described in item 1, and the refrigerant vapor passage of the heater is connected to the regenerator, and the refrigerant vapor passage of the heater is connected to the regenerator via the second heater. The second heater also has a heated medium passage connected to the outside, thus forming a heat-driven combined cycle vapor compression heat pump.

[0012] 7. A heat-driven combined cycle vapor compression heat pump, wherein a second heater is added to the heat-driven combined cycle vapor compression heat pump described in item 2 or 3, and the refrigerant vapor passage of the intermediate temperature regenerator is connected to the regenerator, and the refrigerant vapor passage of the intermediate temperature regenerator is connected to the regenerator via the second heater. The second heater also has a heated medium passage connected to the outside, thus forming a heat-driven combined cycle vapor compression heat pump.

[0013] 8. A heat-driven combined cycle vapor compression heat pump is formed by adding a high-temperature regenerator to any of the heat-driven combined cycle vapor compression heat pumps described in items 1-7. The refrigerant vapor passage of the compressor is connected to the high-temperature heat exchanger, and the refrigerant vapor passage of the expander is connected to the heater, and the expander also has a refrigerant vapor passage connected to the heater through the high-temperature regenerator, thus forming a heat-driven combined cycle vapor compression heat pump.

[0014] 9. A heat-driven combined cycle vapor compression heat pump is any one of the heat-driven combined cycle vapor compression heat pumps described in items 1-7, with the addition of a high-temperature regenerator. The compressor's refrigerant vapor passage is adjusted to be connected to the high-temperature heat exchanger via the high-temperature regenerator. The expander's refrigerant vapor passage is adjusted to be connected to the heater via the high-temperature regenerator. The expander also has a refrigerant vapor passage connected to itself via the high-temperature regenerator, and then the expander has a refrigerant vapor passage connected to the heater, thus forming a heat-driven combined cycle vapor compression heat pump.

[0015] 10. A heat-driven combined cycle vapor compression heat pump is defined in any of the heat-driven combined cycle vapor compression heat pumps described in items 1-9, wherein the high-temperature heat medium channel connecting the high-temperature heat exchanger to the outside is eliminated, a heating furnace is added and replaces the high-temperature heat exchanger, a fuel channel is added to the outside to connect with the heating furnace, a heat source regenerator is added, an air channel is added to the outside to connect with the heating furnace via the heat source regenerator, and the heating furnace also has a gas channel to connect with the outside via the heat source regenerator, thus forming a heat-driven combined cycle vapor compression heat pump.

[0016] 11. A heat-driven combined cycle vapor compression heat pump, wherein any of the heat-driven combined cycle vapor compression heat pumps described in items 1-9 is modified by adding a heating furnace and a heat source regenerator, adjusting the high-temperature heat exchanger from having a refrigerant vapor channel connected to the expander to having a refrigerant vapor channel connected to the expander via the heating furnace, an external fuel channel connected to the heating furnace, an external air channel connected to the heating furnace via the heat source regenerator, and the heating furnace also having a gas channel connected to the outside via the heat source regenerator, thus forming a heat-driven combined cycle vapor compression heat pump.

[0017] 12. A heat-driven combined cycle vapor compression heat pump, wherein in any of the heat-driven combined cycle vapor compression heat pumps described in items 1-9, the high-temperature heat medium channel connecting the high-temperature heat exchanger to the outside is eliminated, a combustion chamber is added and replaces the high-temperature heat exchanger, and there is an external hydrogen channel connecting to the combustion chamber, and an external oxygen channel connecting to the combustion chamber; the regenerator is adjusted so that the condensate pipeline connecting to the nozzle is divided into two paths - the first path connects to the nozzle and the second path connects to the outside, thus forming a heat-driven combined cycle vapor compression heat pump.

[0018] 13. A heat-driven combined cycle vapor compression heat pump is formed by adding a two-phase expander to any of the heat-driven combined cycle vapor compression heat pumps described in items 1-12, replacing the throttle valve, with the two-phase expander connected to the compressor and transmitting power, thus forming a heat-driven combined cycle vapor compression heat pump.

[0019] 14. A heat-driven combined cycle vapor compression heat pump is formed by adding a second nozzle and replacing the throttle valve, and adding a dual-energy compressor and replacing the compressor in any of the heat-driven combined cycle vapor compression heat pumps described in items 1-12.

[0020] 15. A heat-driven combined cycle vapor compression heat pump is formed by adding a second nozzle and replacing the throttle valve, adding a dual-energy compressor and replacing the compressor, and adding an expander speed-up unit and replacing the second expander in any of the heat-driven combined cycle vapor compression heat pumps described in items 1-12. Attached image description:

[0021] Figure 1 This is a principle thermodynamic system diagram of a heat-driven combined cycle vapor compression heat pump provided by the present invention.

[0022] Figure 2 This is a principle thermodynamic system diagram of a heat-driven combined cycle vapor compression heat pump provided by the present invention.

[0023] Figure 3 This is a schematic diagram of the third principle thermodynamic system of a heat-driven combined cycle vapor compression heat pump provided by the present invention.

[0024] Figure 4 This is a schematic diagram of the fourth principle thermodynamic system of a heat-driven combined cycle vapor compression heat pump provided by the present invention.

[0025] Figure 5 This is a fifth principle thermodynamic system diagram of a heat-driven combined cycle vapor compression heat pump provided by the present invention.

[0026] Figure 6 This is a schematic diagram of the sixth principle thermodynamic system of a heat-driven combined cycle vapor compression heat pump provided by the present invention.

[0027] Figure 7 This is the seventh principle thermodynamic system diagram of a heat-driven combined cycle vapor compression heat pump provided by the present invention.

[0028] Figure 8 This is the eighth principle thermodynamic system diagram of a heat-driven combined cycle vapor compression heat pump provided by the present invention.

[0029] Figure 9 This is the ninth principle thermodynamic system diagram of a heat-driven combined cycle vapor compression heat pump provided by the present invention.

[0030] Figure 10 This is a principle thermodynamic system diagram of a heat-driven combined cycle vapor compression heat pump provided by the present invention.

[0031] Figure 11 This is the 11th principle thermodynamic system diagram of a heat-driven combined cycle vapor compression heat pump provided by the present invention.

[0032] Figure 12 This is a principle thermodynamic system diagram of a heat-driven combined cycle vapor compression heat pump provided by the present invention.

[0033] Figure 13 This is a principle thermodynamic system diagram of a heat-driven combined cycle vapor compression heat pump provided by the present invention.

[0034] In the diagram, 1-compressor, 2-expander, 3-second expander, 4-nozzle, 5-steam chamber, 6-throttle valve, 7-high-temperature heat exchanger, 8-heater, 9-evaporator, 10-regenerator, 11-medium-temperature regenerator, 12-reheater, 13-secondary heater, 14-high-temperature regenerator, 15-heating furnace, 16-heat source regenerator, 17-combustion chamber, 18-two-phase expander, 19-second nozzle, 20-dual-energy compressor, 21-expander speed increaser. Detailed implementation method:

[0035] First, it should be noted that the structure and process are not repeated unless necessary; obvious processes are not described. The invention will now be described in detail with reference to the accompanying drawings and examples.

[0036] Figure 1 The heat-driven combined cycle vapor compression heat pump shown is implemented as follows:

[0037] (1) Structurally, it mainly consists of a compressor, an expander, a second expander, a nozzle, a steam distribution chamber, a throttle valve, a high-temperature heat exchanger, a heater, an evaporator, and a regenerator; the compressor 1 has a refrigerant vapor passage connected to the high-temperature heat exchanger 7, the high-temperature heat exchanger 7 also has a refrigerant vapor passage connected to the expander 2, the expander 2 also has a refrigerant vapor passage connected to the heater 8, and then splits into two paths - the first path is connected to the second expander 3 and the second path is connected to the regenerator 10. The regenerator 10 then has a condensate pipeline connected to the steam distribution chamber 5 via the nozzle 4, and the steam distribution chamber 5 also has refrigerant vapor The passage connects to the intermediate steam inlet of the second expander 3. The second expander 3 also has a refrigerant vapor passage connected to the regenerator 10. The steam distribution chamber 5 also has a condensate pipeline connected to the evaporator 9 via a throttling valve 6. The evaporator 9 also has a refrigerant vapor passage connected to the regenerator 10. The regenerator 10 also has a refrigerant vapor passage connected to the compressor 1. The high-temperature heat exchanger 7 also has a high-temperature heat medium passage connected to the outside. The heater 8 also has a heated medium passage connected to the outside. The evaporator 9 also has a low-temperature heat medium passage connected to the outside. The expander 2 and the second expander 3 are connected to the compressor 1 and transmit power.

[0038] (2) In terms of process, the refrigerant vapor discharged from the second expander 3 and evaporator 9 enters the regenerator 10 to absorb heat and increase temperature, flows through the compressor 1 to increase pressure and temperature, flows through the high-temperature heat exchanger 7 to absorb heat, flows through the expander 2 to decrease pressure and do work, flows through the heater 8 to release heat, and then splits into two paths—the first path enters the second expander 3 to do work at a certain pressure and then introduces the refrigerant vapor discharged from the steam distribution chamber 5, the two paths of refrigerant vapor continue to decrease pressure and do work, and then enter the regenerator 10, the second path flows through the regenerator 10 to release heat and condense, and flows through the nozzle 4 to decrease pressure and increase speed before entering the steam distribution chamber 5; the refrigerant medium in the steam distribution chamber 5 is split into two paths—the condensate flows through the throttle valve 6 to decrease pressure and temperature before entering Evaporator 9 absorbs heat and vaporizes. The refrigerant vapor enters the second expander 3 through the intermediate steam inlet to perform work by reducing speed and pressure, and then enters the regenerator 10. The mechanical energy output by expander 2 and second expander 3 provides power to compressor 1, or the mechanical energy output by expander 2 and second expander 3 simultaneously provides power to compressor 1 and the outside, or expander 2, second expander 3 and the outside jointly provide power to compressor 1. The high-temperature heat medium provides driving heat load through high-temperature heat exchanger 7, the heated medium obtains medium-temperature heat load through heater 8, and the low-temperature heat medium provides low-temperature heat load through evaporator 9, forming a heat-driven combined cycle vapor compression heat pump.

[0039] Figure 2 The heat-driven combined cycle vapor compression heat pump shown is implemented as follows:

[0040] (1) Structurally, it mainly consists of a compressor, an expander, a second expander, a nozzle, a steam distribution chamber, a throttle valve, a high-temperature heat exchanger, a heater, an evaporator, a regenerator, and a medium-temperature regenerator; the compressor 1 has a refrigerant vapor passage connected to the high-temperature heat exchanger 7, the high-temperature heat exchanger 7 also has a refrigerant vapor passage connected to the expander 2, the expander 2 also has a refrigerant vapor passage connected to the heater 8 and the medium-temperature regenerator 11, which is then divided into two paths - the first path is connected to the second expander 3 and the second path is connected to the regenerator 10. The regenerator 10 then has a condensate pipeline connected to the steam distribution chamber 5 via the nozzle 4, and the steam distribution chamber 5 also has a refrigerant vapor passage connected to the second expander 3 and the regenerator 10. The refrigerant vapor passage connects to the intermediate steam inlet of the second expander 3. The second expander 3 also has a refrigerant vapor passage connected to the regenerator 10. The steam distribution chamber 5 also has a condensate pipeline connected to the evaporator 9 via a throttle valve 6. The evaporator 9 also has a refrigerant vapor passage connected to the regenerator 10. The regenerator 10 also has a refrigerant vapor passage connected to the compressor 1 via a medium-temperature regenerator 11. The high-temperature heat exchanger 7 also has a high-temperature heat medium passage connected to the outside. The heater 8 also has a heated medium passage connected to the outside. The evaporator 9 also has a low-temperature heat medium passage connected to the outside. The expander 2 and the second expander 3 are connected to the compressor 1 and transmit power.

[0041] (2) In terms of process, with Figure 1Compared to the heat-driven combined cycle vapor compression heat pump shown, the difference lies in the following: the refrigerant vapor discharged from the second expander 3 and evaporator 9 enters the regenerator 10 to absorb heat and increase its temperature, flows through the medium-temperature regenerator 11 and absorbs heat, and then enters the compressor 1 to increase its pressure and temperature; the refrigerant vapor discharged from the expander 2 flows through the heater 8 and the medium-temperature regenerator 11 to gradually release heat, and then splits into two paths - the first path enters the second expander 3 to reduce its pressure and do work, and the second path enters the regenerator 10 to release heat and condense, forming a heat-driven combined cycle vapor compression heat pump.

[0042] Figure 3 The heat-driven combined cycle vapor compression heat pump shown is implemented as follows:

[0043] (1) Structurally, it mainly consists of a compressor, an expander, a second expander, a nozzle, a steam distribution chamber, a throttle valve, a high-temperature heat exchanger, a heater, an evaporator, a regenerator, and a medium-temperature regenerator; the compressor 1 has a refrigerant vapor passage connected to the high-temperature heat exchanger 7, the high-temperature heat exchanger 7 also has a refrigerant vapor passage connected to the expander 2, the expander 2 also has a refrigerant vapor passage connected to the heater 8 and the medium-temperature regenerator 11, which is then divided into two paths - the first path is connected to the second expander 3 and the second path is connected to the regenerator 10. The regenerator 10 then has a condensate pipeline connected to the steam distribution chamber 5 via the nozzle 4, and the steam distribution chamber 5 also has a refrigerant vapor passage connected to the second expander 3. The expander 3 has an intermediate steam inlet. The second expander 3 also has a refrigerant vapor passage connected to the regenerator 10. The steam distribution chamber 5 also has a condensate pipeline connected to the evaporator 9 via a throttle valve 6. The evaporator 9 also has a refrigerant vapor passage connected to the regenerator 10. The regenerator 10 also has a refrigerant vapor passage connected to the compressor 1. After that, the compressor 1 has a refrigerant vapor passage connected to itself via the intermediate temperature regenerator 11. The high temperature heat exchanger 7 also has a high temperature heat medium passage connected to the outside. The heater 8 also has a heated medium passage connected to the outside. The evaporator 9 also has a low temperature heat medium passage connected to the outside. The expander 2 and the second expander 3 are connected to the compressor 1 and transmit power.

[0044] (2) In terms of process, with Figure 1 Compared to the heat-driven combined cycle vapor compression heat pump shown, the difference lies in the following: the refrigerant vapor discharged from the regenerator 10 enters the compressor 1 to increase its pressure and temperature. After reaching a certain level, it flows through the medium-temperature regenerator 11 to absorb heat and increase its temperature, and then enters the compressor 1 to continue to increase its pressure and temperature. After that, it enters the high-temperature heat exchanger 7 to absorb heat and increase its temperature. The refrigerant vapor discharged from the expander 2 flows through the heater 8 and the medium-temperature regenerator 11 to gradually release heat. Then it is divided into two paths - the first path enters the second expander 3 to reduce its pressure and do work, and the second path enters the regenerator 10 to release heat and condense, thus forming a heat-driven combined cycle vapor compression heat pump.

[0045] Figure 4 The heat-driven combined cycle vapor compression heat pump shown is implemented as follows:

[0046] (1) Structurally, in Figure 1 In the heat-driven combined cycle vapor compression heat pump shown, a reheater 12 is added. The refrigerant vapor passage of the second expander 3 is connected to the reheater 10, and then the refrigerant vapor passage of the second expander 3 is connected to itself through the reheater 12. The refrigerant vapor passage of the heater 8 is connected to the reheater 10, and then the refrigerant vapor passage of the heater 8 is connected to the reheater 10 through the reheater 12.

[0047] (2) In terms of process, with Figure 1 Compared to the heat-driven combined cycle vapor compression heat pump shown, the difference is that the refrigerant vapor discharged from the expander 2 flows through the heater 8 and releases heat, and then splits into two paths - the first path enters the second expander 3 to reduce pressure and do work to a certain extent, then flows through the reheater 12 to absorb heat, enters the second expander 3 to continue to reduce pressure and do work, and then enters the regenerator 10; the second path flows through the reheater 12 to release heat and then enters the regenerator 10 to release heat and condense, thus forming a heat-driven combined cycle vapor compression heat pump.

[0048] Figure 5 The heat-driven combined cycle vapor compression heat pump shown is implemented as follows:

[0049] (1) Structurally, in Figure 1 In the heat-driven combined cycle vapor compression heat pump shown, a second heater 13 is added. The refrigerant vapor passage of the heater 8 is connected to the regenerator 10, and the refrigerant vapor passage of the heater 8 is connected to the regenerator 10 through the second heater 13. The second heater 13 also has a heated medium passage connected to the outside.

[0050] (2) In terms of process, with Figure 1 Compared to the heat-driven combined cycle vapor compression heat pump shown, the difference is that the refrigerant vapor discharged from the expander 2 flows through the heater 8 and releases heat, and then splits into two paths - the first path enters the second expander 3 to reduce pressure and do work, and the second path flows through the second heater 13 to release heat and cool down before entering the regenerator 10 to release heat and condense; the heated medium obtains the heating load through the second heater 13, forming a heat-driven combined cycle vapor compression heat pump.

[0051] Figure 6 The heat-driven combined cycle vapor compression heat pump shown is implemented as follows:

[0052] (1) Structurally, in Figure 1In the heat-driven combined cycle vapor compression heat pump shown, a high-temperature regenerator is added. The refrigerant vapor passage of compressor 1 is connected to high-temperature heat exchanger 7, and the refrigerant vapor passage of compressor 1 is connected to high-temperature heat exchanger 7 via high-temperature regenerator 14. The refrigerant vapor passage of expander 2 is connected to heater 8, and the refrigerant vapor passage of expander 2 is also connected to heater 8 via high-temperature regenerator 14.

[0053] (2) In terms of process, with Figure 1 Compared with the heat-driven combined cycle vapor compression heat pump shown, the difference is that the refrigerant vapor discharged by the compressor 1 flows through the high-temperature regenerator 14 and the high-temperature heat exchanger 7 to gradually absorb heat and increase temperature, flows through the expander 2 to reduce pressure and do work, flows through the high-temperature regenerator 14 to release heat and decrease temperature, and then enters the heater 8 to release heat and decrease temperature, thus forming a heat-driven combined cycle vapor compression heat pump.

[0054] Figure 7 The heat-driven combined cycle vapor compression heat pump shown is implemented as follows:

[0055] (1) Structurally, in Figure 1 In the heat-driven combined cycle vapor compression heat pump shown, a high-temperature regenerator is added. The refrigerant vapor passage of compressor 1 is connected to high-temperature heat exchanger 7, and the connection is adjusted so that compressor 1 has a refrigerant vapor passage connected to high-temperature heat exchanger 7 via high-temperature regenerator 14. The refrigerant vapor passage of expander 2 is connected to heater 8, and the connection is adjusted so that expander 2 also has a refrigerant vapor passage connected to itself via high-temperature regenerator 14, and then expander 2 has a refrigerant vapor passage connected to heater 8.

[0056] (2) In terms of process, with Figure 1 Compared to the heat-driven combined cycle vapor compression heat pump shown, the difference lies in the following: the refrigerant vapor discharged from the compressor 1 flows through the high-temperature regenerator 14 and the high-temperature heat exchanger 7 to gradually absorb heat and increase its temperature, and then supplies it to the expander 2; the refrigerant vapor enters the expander 2 to reduce pressure and do work, and after reaching a certain level, it flows through the high-temperature regenerator 14 to release heat and decrease its temperature, and then enters the expander 2 to continue to reduce pressure and do work, and then enters the heater 8 to release heat and decrease its temperature, thus forming a heat-driven combined cycle vapor compression heat pump.

[0057] Figure 8 The heat-driven combined cycle vapor compression heat pump shown is implemented as follows:

[0058] (1) Structurally, in Figure 1In the heat-driven combined cycle vapor compression heat pump shown, the high-temperature heat medium channel connecting the high-temperature heat exchanger 7 to the outside is removed, and a heating furnace 15 is added to replace the high-temperature heat exchanger 7. There is a fuel channel connecting the heating furnace 15 to the outside. A heat source regenerator 16 is added, and there is an air channel connecting the heating furnace 15 to the outside via the heat source regenerator 16. The heating furnace 15 also has a gas channel connecting to the outside via the heat source regenerator 16.

[0059] (2) In terms of process, with Figure 1 Compared to the heat-driven combined cycle vapor compression heat pump shown, the difference lies in the following: external fuel enters the heating furnace 15, and external air flows through the heat source regenerator 16 to absorb heat and increase its temperature before entering the heating furnace 15. The fuel and air mix and burn in the heating furnace 15 to form fuel gas. The fuel gas generated in the heating furnace 15 releases heat to the refrigerant vapor flowing through it, and then flows through the heat source regenerator 16 to release heat and decrease its temperature before being discharged to the outside. The fuel provides the driving heat load through the heating furnace 15, forming a heat-driven combined cycle vapor compression heat pump.

[0060] Figure 9 The heat-driven combined cycle vapor compression heat pump shown is implemented as follows:

[0061] (1) Structurally, in Figure 1 In the heat-driven combined cycle vapor compression heat pump shown, a heating furnace and a heat source regenerator are added. The high-temperature heat exchanger 7 is adjusted so that the refrigerant vapor channel is connected to the expander 2 via the heating furnace 15. The high-temperature heat exchanger 7 has a refrigerant vapor channel connected to the expander 2 via the heating furnace 15. It also has an external fuel channel connected to the heating furnace 15 and an external air channel connected to the heating furnace 15 via the heat source regenerator 16. The heating furnace 15 also has a gas channel connected to the outside via the heat source regenerator 16.

[0062] (2) In terms of process, with Figure 1 Compared to the heat-driven combined cycle vapor compression heat pump shown, the difference lies in the following: external fuel enters the heating furnace 15, and external air flows through the heat source regenerator 16 to absorb heat and increase its temperature before entering the heating furnace 15. The fuel and air mix and burn in the heating furnace 15 to form fuel gas. The fuel gas generated in the heating furnace 15 releases heat to the refrigerant vapor flowing through it, and then flows through the heat source regenerator 16 to release heat and decrease its temperature before being discharged to the outside. The refrigerant vapor discharged by the compressor 1 flows through the high-temperature heat exchanger 7 and the heating furnace 15 to gradually absorb heat and increase its temperature, and then enters the expander 2 to reduce its pressure and do work. The fuel provides the driving heat load through the heating furnace 15, forming a heat-driven combined cycle vapor compression heat pump.

[0063] Figure 10 The heat-driven combined cycle vapor compression heat pump shown is implemented as follows:

[0064] (1) Structurally, in Figure 1In the heat-driven combined cycle vapor compression heat pump shown, the high-temperature heat medium channel connecting the high-temperature heat exchanger 7 to the outside is removed, and a combustion chamber 17 is added to replace the high-temperature heat exchanger 7. There is a hydrogen channel connecting the combustion chamber 17 to the outside, and there is also an oxygen channel connecting the combustion chamber 17 to the outside. The condensate pipe of the regenerator 10 connected to the nozzle 3 is adjusted to have the condensate pipe of the regenerator 10 divided into two paths - the first path is connected to the nozzle 3 and the second path is connected to the outside.

[0065] (2) In terms of process, with Figure 1 Compared to the heat-driven combined cycle vapor compression heat pump shown, the difference lies in the following: hydrogen and oxygen at higher external pressure enter the combustion chamber 17 for combustion, generating high-temperature, high-pressure steam; the steam discharged from the compressor 1 enters the combustion chamber 17, mixes with the high-temperature steam, absorbs heat, and increases in temperature; the steam discharged from the combustion chamber 10 flows through the expander 2 to reduce pressure and do work, flows through the heater 8 to release heat and cool down, and then splits into two paths—the first path enters the second expander 3 to reduce pressure and do work, and the second path enters the regenerator 10 to release heat and condense, and then splits into two paths again—the first path enters the nozzle 4 to reduce pressure and increase speed, and the second path is discharged to the outside; hydrogen and oxygen provide driving heat load through combustion, forming a heat-driven combined cycle vapor compression heat pump.

[0066] Figure 11 The heat-driven combined cycle vapor compression heat pump shown is implemented as follows:

[0067] (1) Structurally, in Figure 1 In the heat-driven combined cycle vapor compression heat pump shown, a two-phase expander 18 is added and replaces the throttle valve 6. The two-phase expander 18 is connected to the compressor 1 and transmits power.

[0068] (2) In terms of process, with Figure 1 Compared to the heat-driven combined cycle vapor compression heat pump shown, the difference is that the condensate discharged from the steam separator 5 flows through the two-phase expander 18 to reduce pressure and do work, and then enters the evaporator 9 to absorb heat and vaporize; the mechanical energy output by the two-phase expander 18 is provided to the compressor 1 to provide power, thus forming a heat-driven combined cycle vapor compression heat pump.

[0069] Figure 12 The heat-driven combined cycle vapor compression heat pump shown is implemented as follows:

[0070] (1) Structurally, in Figure 1 In the heat-driven combined cycle vapor compression heat pump shown, a second nozzle 19 is added and replaces the throttle valve 6, and a dual-energy compressor 20 is added and replaces the compressor 1.

[0071] (2) In terms of process, with Figure 1Compared to the heat-driven combined cycle vapor compression heat pump shown, the difference is that: the condensate discharged from the steam distribution chamber 5 flows through the second nozzle 19 to reduce pressure and increase speed, and then enters the evaporator 9 to absorb heat and vaporize; the refrigerant vapor discharged from the regenerator 10 flows through the dual-energy compressor 20 to increase pressure and temperature and reduce speed, and then enters the high-temperature heat exchanger 7 to absorb heat and increase temperature, thus forming a heat-driven combined cycle vapor compression heat pump.

[0072] Figure 13 The heat-driven combined cycle vapor compression heat pump shown is implemented as follows:

[0073] (1) Structurally, in Figure 1 In the heat-driven combined cycle vapor compression heat pump shown, a second nozzle 19 is added and replaces the throttle valve 6, a dual-energy compressor 20 is added and replaces the compressor 1, and an expander speed-up unit 21 is added and replaces the second expander 3.

[0074] (2) In terms of process, with Figure 1 Compared to the heat-driven combined cycle vapor compression heat pump shown, the difference lies in the following: the condensate discharged from the steam separator 5 flows through the second nozzle 19 to reduce pressure and increase speed, and then enters the evaporator 9 to absorb heat and vaporize; the refrigerant vapor discharged from the regenerator 10 flows through the dual-energy compressor 20 to increase pressure and temperature and reduce speed, and then enters the high-temperature heat exchanger 7 to absorb heat and increase temperature; the refrigerant vapor discharged from the heater 8 is divided into two paths - the first path enters the expander 21 to reduce pressure to a certain level and then introduces the refrigerant vapor discharged from the steam separator 5; the two refrigerant vapors merge and continue to complete the pressure reduction and speed increase or complete the pressure reduction and work and speed increase, and then enter the regenerator 10; the second path enters the regenerator 10 to release heat and condense, forming a heat-driven combined cycle vapor compression heat pump.

[0075] The effects achievable by this invention—the heat-driven combined cycle vapor compression heat pump proposed in this invention has the following effects and advantages:

[0076] (1) Significantly reduces irreversible losses during the condensate depressurization process and improves the heat pump performance index.

[0077] (2) The step-by-step condensate depressurization process can flexibly adjust the flow rate of the refrigerant medium through the evaporator, ensuring that the evaporator has suitable operating parameters and design feasibility.

[0078] (3) It basically eliminates the adverse effects of the low latent heat of the refrigerant medium, and provides convenience for the selection of refrigerant medium.

[0079] (4) Significantly improves the utilization of sensible heat of condensate, which is beneficial to reduce the compression ratio and improve the performance index of heat pump.

[0080] (5) The range of working parameters has been greatly expanded, the systemic irreversible loss is small, and efficient cooling / high temperature heating is achieved.

[0081] (6) Single working fluid is beneficial for production and storage; reduces operating costs and improves the flexibility of cycle regulation.

[0082] (7) In high-temperature or variable-temperature zones, it helps to reduce irreversible temperature loss in the heat transfer process and improve the performance index.

[0083] (8) In high-temperature heating areas, adopt low-pressure operation mode to alleviate or resolve the contradiction between performance index, circulating medium parameters and pressure and temperature resistance of pipes in traditional refrigeration and heat pump devices.

[0084] (9) It has a wide range of applications and can adapt well to energy demand and the working fluid and working parameters are flexibly matched.

[0085] (10) It is conducive to better expanding the application of thermal energy in the fields of high-efficiency refrigeration, deep refrigeration, high-temperature heating and variable-temperature heating.

Claims

1. A heat-driven combined cycle vapor compression heat pump mainly consists of a compressor, an expander, a second expander, a nozzle, a steam distribution chamber, a throttling valve, a high-temperature heat exchanger, a heater, an evaporator, and a regenerator. The compressor (1) has a refrigerant vapor passage connected to the high-temperature heat exchanger (7), the high-temperature heat exchanger (7) also has a refrigerant vapor passage connected to the expander (2), the expander (2) also has a refrigerant vapor passage connected to the heater (8), and then splits into two paths - the first path is connected to the second expander (3) and the second path is connected to the regenerator (10). The regenerator (10) then has a condensate pipeline connected to the steam distribution chamber (5) via the nozzle (4), and the steam distribution chamber (5) also has a refrigerant vapor passage connected to the second expander. The machine (3) has an intermediate steam inlet, the second expander (3) also has a refrigerant steam channel connected to the regenerator (10), the steam distribution chamber (5) also has a condensate pipeline connected to the evaporator (9) via a throttle valve (6), the evaporator (9) also has a refrigerant steam channel connected to the regenerator (10), the regenerator (10) also has a refrigerant steam channel connected to the compressor (1); the high temperature heat exchanger (7) also has a high temperature heat medium channel connected to the outside, the heater (8) also has a heated medium channel connected to the outside, the evaporator (9) also has a low temperature heat medium channel connected to the outside, the expander (2) and the second expander (3) are connected to the compressor (1) and transmit power, forming a heat-driven combined cycle vapor compression heat pump.

2. A heat-driven combined cycle vapor compression heat pump mainly consists of a compressor, an expander, a second expander, a nozzle, a steam distribution chamber, a throttling valve, a high-temperature heat exchanger, a heater, an evaporator, a regenerator, and a medium-temperature regenerator. The compressor (1) has a refrigerant vapor passage connected to the high-temperature heat exchanger (7), and the high-temperature heat exchanger (7) also has a refrigerant vapor passage connected to the expander (2). The expander (2) also has a refrigerant vapor passage connected to the heater (8) and the medium-temperature regenerator (11), which is then divided into two paths—the first path is connected to the second expander (3) and the second path is connected to the regenerator (10). The regenerator (10) then has a condensate pipe connected to the steam distribution chamber (5) via the nozzle (4). The steam distribution chamber (5) also has a refrigerant vapor passage connected to the second expander (3). The second expander (3) has an intermediate steam inlet, and the second expander (3) also has a refrigerant steam channel connected to the regenerator (10). The steam distribution chamber (5) also has a condensate pipeline connected to the evaporator (9) via a throttle valve (6). The evaporator (9) also has a refrigerant steam channel connected to the regenerator (10). The regenerator (10) also has a refrigerant steam channel connected to the compressor (1) via a medium-temperature regenerator (11). The high-temperature heat exchanger (7) also has a high-temperature heat medium channel connected to the outside. The heater (8) also has a heated medium channel connected to the outside. The evaporator (9) also has a low-temperature heat medium channel connected to the outside. The expander (2) and the second expander (3) are connected to the compressor (1) and transmit power to form a heat-driven combined cycle vapor compression heat pump.

3. A heat-driven combined cycle vapor compression heat pump mainly consists of a compressor, an expander, a second expander, a nozzle, a steam distribution chamber, a throttling valve, a high-temperature heat exchanger, a heater, an evaporator, a regenerator, and a medium-temperature regenerator. The compressor (1) has a refrigerant vapor channel connected to the high-temperature heat exchanger (7), and the high-temperature heat exchanger (7) also has a refrigerant vapor channel connected to the expander (2). The expander (2) also has a refrigerant vapor channel connected to the heater (8) and the medium-temperature regenerator (11), which is then divided into two paths—the first path is connected to the second expander (3) and the second path is connected to the regenerator (10). The regenerator (10) then has a condensate pipeline connected to the steam distribution chamber (5) via the nozzle (4). The steam distribution chamber (5) also has a refrigerant vapor channel connected to the second expander (3) and the intermediate steam distribution chamber (5). The steam inlet, the second expander (3) and the refrigerant vapor channel are connected to the regenerator (10), the steam distribution chamber (5) and the condensate pipeline are connected to the evaporator (9) through the throttle valve (6), the evaporator (9) and the refrigerant vapor channel are connected to the regenerator (10), the regenerator (10) and the refrigerant vapor channel are connected to the compressor (1), the compressor (1) and the refrigerant vapor channel are connected to itself through the medium temperature regenerator (11); the high temperature heat exchanger (7) and the high temperature heat medium channel are connected to the outside, the heater (8) and the heated medium channel are connected to the outside, the evaporator (9) and the low temperature heat medium channel are connected to the outside, the expander (2) and the second expander (3) are connected to the compressor (1) and transmit power to form a heat-driven combined cycle vapor compression heat pump.

4. A heat-driven combined cycle vapor compression heat pump is a heat-driven combined cycle vapor compression heat pump as described in claim 1, wherein a reheater (12) is added, the refrigerant vapor passage of the second expander (3) is connected to the regenerator (10) and then the refrigerant vapor passage of the second expander (3) is connected to itself through the reheater (12) and then the refrigerant vapor passage of the second expander (3) is connected to the regenerator (10), and the refrigerant vapor passage of the heater (8) is connected to the regenerator (10) and then the refrigerant vapor passage of the heater (8) is connected to the regenerator (10) through the reheater (12), thus forming a heat-driven combined cycle vapor compression heat pump.

5. A heat-driven combined cycle vapor compression heat pump is a heat-driven combined cycle vapor compression heat pump as described in claim 2 or claim 3, wherein a reheater (12) is added, the refrigerant vapor passage of the second expander (3) is connected to the regenerator (10) and then the refrigerant vapor passage of the second expander (3) is connected to itself through the reheater (12) and then the refrigerant vapor passage of the second expander (3) is connected to the regenerator (10), and the refrigerant vapor passage of the medium-temperature regenerator (11) is connected to the regenerator (10) and then the refrigerant vapor passage of the medium-temperature regenerator (11) is connected to the regenerator (10) through the reheater (12), thus forming a heat-driven combined cycle vapor compression heat pump.

6. A heat-driven combined cycle vapor compression heat pump is a heat-driven combined cycle vapor compression heat pump according to claim 1, wherein a second heater (13) is added, and the heater (8) is adjusted to have a refrigerant vapor channel connected to the regenerator (10) via the second heater (13) and the regenerator (10). The second heater (13) also has a heated medium channel connected to the outside, thus forming a heat-driven combined cycle vapor compression heat pump.

7. A heat-driven combined cycle vapor compression heat pump is a heat-driven combined cycle vapor compression heat pump according to claim 2 or claim 3, wherein a second heater (13) is added, and the refrigerant vapor passage of the medium-temperature regenerator (11) is connected to the regenerator (10) and the medium-temperature regenerator (11) is connected to the regenerator (10) through the second heater (13). The second heater (13) also has a heated medium passage connected to the outside, thus forming a heat-driven combined cycle vapor compression heat pump.

8. A heat-driven combined cycle vapor compression heat pump is a heat-driven combined cycle vapor compression heat pump according to any one of claims 1-7, wherein a high-temperature regenerator is added, the compressor (1) is connected to the high-temperature heat exchanger (7) via a refrigerant vapor channel, and the compressor (1) is connected to the high-temperature heat exchanger (7) via a high-temperature regenerator (14), and the expander (2) is connected to the heater (8) via a refrigerant vapor channel, and the expander (2) is connected to the heater (8) via a high-temperature regenerator (14), thereby forming a heat-driven combined cycle vapor compression heat pump.

9. A heat-driven combined cycle vapor compression heat pump is a heat-driven combined cycle vapor compression heat pump according to any one of claims 1-7, wherein a high-temperature regenerator is added, the compressor (1) is connected to the high-temperature heat exchanger (7) via a refrigerant vapor channel, and the compressor (1) is connected to the high-temperature heat exchanger (7) via a high-temperature regenerator (14), and the expander (2) is connected to the heater (8) via a refrigerant vapor channel, and the expander (2) is connected to itself via a high-temperature regenerator (14), and then the expander (2) is connected to the heater (8) via a refrigerant vapor channel, thus forming a heat-driven combined cycle vapor compression heat pump.

10. A heat-driven combined cycle vapor compression heat pump is a heat-driven combined cycle vapor compression heat pump according to any one of claims 1-9, wherein the high-temperature heat medium channel connecting the high-temperature heat exchanger (7) to the outside is removed, a heating furnace (15) is added and replaces the high-temperature heat exchanger (7), a fuel channel is connected to the heating furnace (15) from the outside, a heat source regenerator (16) is added, an air channel is connected to the heating furnace (15) from the outside via the heat source regenerator (16), and the heating furnace (15) also has a gas channel connected to the outside via the heat source regenerator (16), thus forming a heat-driven combined cycle vapor compression heat pump.

11. A heat-driven combined cycle vapor compression heat pump is a heat-driven combined cycle vapor compression heat pump according to any one of claims 1-9, wherein a heating furnace and a heat source regenerator are added, and the high-temperature heat exchanger (7) is adjusted to have a refrigerant vapor channel connected to the expander (2) via the heating furnace (15) and the expander (2), and an external fuel channel connected to the heating furnace (15), and an external air channel connected to the heating furnace (15) via the heat source regenerator (16), and the heating furnace (15) also has a gas channel connected to the outside via the heat source regenerator (16), thus forming a heat-driven combined cycle vapor compression heat pump.

12. A heat-driven combined cycle vapor compression heat pump is a heat-driven combined cycle vapor compression heat pump according to any one of claims 1-9, wherein the high-temperature heat medium channel connecting the high-temperature heat exchanger (7) to the outside is removed, a combustion chamber (17) is added and replaces the high-temperature heat exchanger (7), a hydrogen channel is connected to the combustion chamber (17) from the outside, and an oxygen channel is also connected to the combustion chamber (17) from the outside; the condensate pipe of the regenerator (10) is connected to the nozzle (3) and then the condensate pipe of the regenerator (10) is divided into two paths - the first path is connected to the nozzle (3) and the second path is connected to the outside, thus forming a heat-driven combined cycle vapor compression heat pump.

13. A heat-driven combined cycle vapor compression heat pump is a heat-driven combined cycle vapor compression heat pump according to any one of claims 1-12, wherein a two-phase expander (18) is added and replaces the throttle valve (6), the two-phase expander (18) is connected to the compressor (1) and transmits power, thereby forming a heat-driven combined cycle vapor compression heat pump.

14. A heat-driven combined cycle vapor compression heat pump is formed by adding a second nozzle (19) and replacing the throttle valve (6) in any one of the heat-driven combined cycle vapor compression heat pumps described in claims 1-12, and adding a dual-energy compressor (20) and replacing the compressor (1).

15. A heat-driven combined cycle vapor compression heat pump is formed by adding a second nozzle (19) to replace the throttle valve (6), adding a dual-energy compressor (20) to replace the compressor (1), and adding an expander speed increaser (21) to replace the second expander (3) in any of the heat-driven combined cycle vapor compression heat pumps described in claims 1-12.

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